They don't come can-shaped because creating an opening mechanism would be much more complicated. You could have the can plastic with a metal top, that might work. Keeping a good seal might be a problem though.

A glass seal that is thin enough it can be broken without producing a dangerous edge yet strong enough that it can contain the pressure inside the can. All while making the whole system cheap enough to rival aluminum can production.

I think Brian Potter is a character on a BBC show called "Pheonix Nights", apparantly. The problem with US shows are that the mainstream ones here are basically plastered all over the gd globe as well.

[ Remembering TV in a London hotel, looking for a local comedy -- finding "Friends" :( ]